LDAP Injection in Red Hat Build Of Keycloak

CVE-2026-16071

A flaw was found in the LDAP storage provider of Keycloak, which is used to federate user identities from external directories. The issue occurs when a delegated administrator performs a search using a specific LDAP entry Distinguished Name (DN). Due to missing validation, the system allows lookups for users located outside the configured search boundary, leading to the disclosure of account information from unauthorized parts of the directory and unintended importing of those users into local storage.

EPSS: 0.002 (13.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16071?
CVE-2026-16071 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under LDAP Injection. CVSS score: 5.4/10. Published 2026-08-05.
How severe is CVE-2026-16071?
Medium severity. CVSS v3 base score is 5.4 out of 10.